The air circulation system on the building of the House is usually obtained through a vent or hole in the wind.For the outer building uses a relic room ventilation to air circulation, while for the position in the middle of the building spaces can use channel wind catchers,or commonly referred to as channel wind catchers or wind catchers Tower.To make the air could flow through ventilation holes are usually made in two areas of the wall.The difference in pressure and the outside of the building will help air flow of ventilation in the area of the walls of one leading vetilasi on other areas of the wall.The number of air vents in buildings (House) should be enough to support the process of air circulation,stream of fresh air from outside into the room.Form of ventilation is commonly used conventional windows with shutters of glass or wood panels that can be opened wide in the daytime.

Then there is also a window bouvenlicht, namely glass windows with 2 blades that have a gap between them that allows the exchange of air. Bouvenlicht usually installed in bathrooms or toilets.There is also a type of window glass Nako with glass blades which can open the lid.Moreover, it also can be shaped ventilation holes with a lattice arrangement of horizontal winds on the walls of the building.Methods for making ventilation holes also vary by making a hole walls, wood frame with horizontal lattice direction,or use the rooster of the concrete material,wood,aluminum or metal.

If the use of ventilation air felt still less, then it can be done in ways that alternative methods by adding exhauster active ventilation (exhaust fan or blower section wall roof section) which is active with the help of electrical energy will suck and drain the air out of the room, to forced to swap with fresher air from outside through the vents.